Credit: Kevin Mazur/WireImage

How can the Biebs ever top this one?

On Friday, Justin Bieber pulled off the most romantic surprise date ever for girlfriend Selena Gomez in L.A.

After catching pal Demi Lovato's concert at the Nokia Theater, TMZ reports that Bieber, 17, whisked Gomez, 18, to the nearby Staples Center via underground tunnel. See more pics of the Biebs and Selena from PopSugar!

The teen supercouple arrived at the empty, 20,000-seat arena, where the lights had been dimmed; on the court floor was a table set for two with candles.

After the meal -- steak and pasta, catered by the Lexus club -- the couple enjoyed a private screening of Titanic. (The "Baby" singer apparently got the idea from the Adam Sandler flick Mr. Deeds, in which Sandler's character surprises his girlfriend, played by Winona Ryder, with a similar gesture at NYC's Madison Square Garden.)

And TMZ reports that Bieber paid nothing for the big date: The Staples Center comped the evening as thanks for Bieber's recent sold out concerts there.

"Romance isn't dead," Bieber Tweeted that night. "Treat your lady right fellas."